National Instruments NI USB-9234 - Manuals

© National Instruments Corporation 5 NI USB-9234 User Guide and Specifications Measurement Studio If you program your NI-DAQmx-supported device in Measurement Studio using Visual C++, Visual C#, or Visual Basic .NET, you can interactively create channels and tasks by launching the DAQ Assistant from...

NI USB-9234 User Guide and Specifications 6 ni.com .NET Languages without NI Application Software With the Microsoft .NET Framework version 1.1 or later, you can use NI-DAQmx to create applications using Visual C# and Visual Basic .NET without Measurement Studio. You need Microsoft Visual Studio .NE...

© National Instruments Corporation 7 NI USB-9234 User Guide and Specifications Installing the Software Software support for the NI USB-9234 for Windows Vista/XP/2000 is provided by NI-DAQmx. The DAQ Getting Started Guide , which you can download at ni.com/manuals , offers NI-DAQmx users step-by-step...

© National Instruments Corporation 9 NI USB-9234 User Guide and Specifications Mounting the NI USB-9234 Threaded inserts are located in the NI USB-9234 for mounting it to a panel. Refer to Figure 5 for the module dimensions. Figure 5. Module Dimensions Connecting the NI USB-9234 to a Computer Plug o...

NI USB-9234 User Guide and Specifications 10 ni.com LED Indicator The NI USB-9234 device has a green LED next to the USB connector. The LED indicator indicates device status, as listed in Table 1. When the device is connected to a USB port, the LED blinks steadily to indicate that the device is init...

NI USB-9234 User Guide and Specifications 12 ni.com Connecting Signal Sources to the NI USB-9234 You can connect ground-referenced or floating signal sensors to the NI USB-9234. To avoid picking up ground noise, use a floating connection. To further minimize ground noise, prevent the metal shells of...

© National Instruments Corporation 13 NI USB-9234 User Guide and Specifications NI USB-9234 Circuitry The NI USB-9234 analog input channels are referenced to chassis ground through a 50 Ω resistor. To minimize ground noise, make sure that the chassis ground is connected to earth ground. Each channel...

NI USB-9234 User Guide and Specifications 14 ni.com The NI USB-9234 also has TEDS circuitry. For more information about TEDS, go to ni.com/info and enter rdteds . Understanding NI USB-9234 Filtering The NI USB-9234 uses a combination of analog and digital filtering to provide an accurate representat...

© National Instruments Corporation 15 NI USB-9234 User Guide and Specifications Stopband The filter significantly attenuates all signals above the stopband frequency. The primary goal of the filter is to prevent aliasing. Therefore, the stopband frequency scales precisely with the data rate. The sto...

NI USB-9234 User Guide and Specifications 16 ni.com Specifications The following specifications are typical for the range 0 to 60 °C unless otherwise noted. Input Characteristics Number of channels ................................4 analog input channels ADC resolution ..................................

© National Instruments Corporation 17 NI USB-9234 User Guide and Specifications AC cutoff frequency response Input range ............................................. ±5 V AC voltage full-scale range Minimum ........................................ ±5 V pk Typical ......................................

NI USB-9234 User Guide and Specifications 18 ni.com Overvoltage protection (with respect to chassis ground) For a signal source connectedto AI+ and AI– ................................±30 V For a low-impedance sourceconnected to AI+ and AI– ...............– 6 to 30 V Input delay .......................

© National Instruments Corporation 19 NI USB-9234 User Guide and Specifications Phase nonlinearity ( f s = 51.2 kS/s) ................................ ±0.45° max Stopband Frequency........................................ 0.55 · f s Rejection ......................................... 100 dB Alias-fre...

NI USB-9234 User Guide and Specifications 20 ni.com Power Requirements Current consumption from USB .............500 mA, max Suspend mode..................................2.5 mA, max Bus Interface USB specification ...................................USB 2.0 Hi-Speed Physical Characteristics Dimensio...

© National Instruments Corporation 21 NI USB-9234 User Guide and Specifications Safety Standards This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN-61010-1 • UL 61010-1, CSA 6...

NI USB-9234 User Guide and Specifications 22 ni.com CE Compliance This product meets the essential requirements of applicable European Directives, as amended for CE marking, as follows: • 2006/95/EC; Low-Voltage Directive (safety) • 2004/108/EC; Electromagnetic Compatibility Directive (EMC) Note Ref...

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